Ramona weather in September: Ramona, California: normal highs, lows, rain and records for September
Ramona in September has a normal high of 87°F and a normal low of 55°F, a daily mean of 71°F, falling from 91°F on the 1st to 83°F by the 30th. Measurable precipitation falls on 2 days in a normal September, 0.15 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 13°C, 4 mm of precipitation in September.
- NOAA stationRamona Airport
- Station IDUSW00053120
- Location33.04°N 116.92°W
- Elevation1,393 ft (425 m)
- Population (census place)22,829
- Jan 66° 37°
- Feb 66° 38°
- Mar 68° 40°
- Apr 72° 43°
- May 76° 49°
- Jun 83° 52°
- Jul 89° 58°
- Aug 91° 59°
- Sep 87° 55°
- Oct 80° 49°
- Nov 73° 40°
- Dec 66° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Ramona in September?
The normal high is 87°F and the normal low 55°F, for a daily mean of 71.2°F. September is 3.5°F cooler than August and 7.0°F warmer than October. September is the 3rd warmest month of the year in Ramona and the 9th wettest. Across the month the normal high falls 8°F, from 91°F on September 1 to 83°F on September 30. From one year to the next September's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 69°F and 74°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 8%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 91°F | 57°F | 4% | 1% |
| September 8 | 90°F | 56°F | 5% | 1% |
| September 15 | 88°F | 55°F | 5% | 1% |
| September 22 | 86°F | 54°F | 6% | 2% |
| September 30 | 83°F | 52°F | 8% | 2% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 91°F | 57°F | 4% | 1% | 12 h 50 min |
| September 2 | 91°F | 57°F | 4% | 1% | 12 h 50 min |
| September 3 | 91°F | 57°F | 4% | 1% | 12 h 50 min |
| September 4 | 90°F | 57°F | 5% | 1% | 12 h 50 min |
| September 5 | 90°F | 57°F | 5% | 1% | 12 h 50 min |
| September 6 | 90°F | 57°F | 5% | 1% | 12 h 40 min |
| September 7 | 90°F | 56°F | 5% | 1% | 12 h 40 min |
| September 8 | 90°F | 56°F | 5% | 1% | 12 h 40 min |
| September 9 | 89°F | 56°F | 5% | 1% | 12 h 40 min |
| September 10 | 89°F | 56°F | 5% | 1% | 12 h 40 min |
| September 11 | 89°F | 56°F | 5% | 1% | 12 h 30 min |
| September 12 | 89°F | 56°F | 5% | 1% | 12 h 30 min |
| September 13 | 88°F | 55°F | 5% | 1% | 12 h 30 min |
| September 14 | 88°F | 55°F | 5% | 1% | 12 h 30 min |
| September 15 | 88°F | 55°F | 5% | 1% | 12 h 30 min |
| September 16 | 88°F | 55°F | 5% | 1% | 12 h 20 min |
| September 17 | 87°F | 55°F | 6% | 1% | 12 h 20 min |
| September 18 | 87°F | 55°F | 6% | 1% | 12 h 20 min |
| September 19 | 87°F | 54°F | 6% | 1% | 12 h 20 min |
| September 20 | 86°F | 54°F | 6% | 1% | 12 h 20 min |
| September 21 | 86°F | 54°F | 6% | 2% | 12 h 10 min |
| September 22 | 86°F | 54°F | 6% | 2% | 12 h 10 min |
| September 23 | 85°F | 54°F | 7% | 2% | 12 h 10 min |
| September 24 | 85°F | 53°F | 7% | 2% | 12 h 10 min |
| September 25 | 85°F | 53°F | 7% | 2% | 12 h 10 min |
| September 26 | 84°F | 53°F | 7% | 2% | 12 h |
| September 27 | 84°F | 53°F | 7% | 2% | 12 h |
| September 28 | 84°F | 53°F | 8% | 2% | 12 h |
| September 29 | 84°F | 52°F | 8% | 2% | 12 h |
| September 30 | 83°F | 52°F | 8% | 2% | 12 h |
- Normal high
- 87°FSeptember average
- Normal low
- 55°FSeptember average
- Precipitation
- 0.15 inmonth total
- Days with precipitation
- 20.01 inch or more
- Days at 90°F or more
- 13
- Daylight
- 12 h 50 min to 12 hSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 25
- Sunshine
- 94%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00053120; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Ramona in September?
On a given September day the chance of 0.01 inch or more is 6% on average, highest around September 30 (8%). In all, 0.15 in falls on 2 days of a normal September.
In a normal September in Ramona, 13 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00053120.
What are the records for September in Ramona?
The warmest September temperature on Ramona's official record (since 1974) is 114°F, on September 6, 2024; the coldest is 39°F, on September 25, 2005. The wettest September brought 3.03 in (1976).
The September mean against the 1991-2020 normal of 71.2°F: 2021 71.2°F (at normal), 2022 76.3°F (+5.1), 2023 68.7°F (−2.5), 2024 73.3°F (+2.0), 2025 71.7°F (+0.5), 2026 72.9°F (+1.7). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 71.2°F | at normal | 0.03 in |
| 2022 | 76.3°F | +5.1°F | 0.97 in |
| 2023 | 68.7°F | −2.5°F | 0.07 in |
| 2024 | 73.3°F | +2.0°F | 0.00 in |
| 2025 | 71.7°F | +0.5°F | 0.62 in |
| 2026 | 72.9°F | +1.7°F | 0.05 in |
Source: records: ACIS, NWS threaded record RNMthr; recent months: ACIS, station USW00053120. Records and recent months use complete months only.
How does September in Ramona compare across California?
Across the 219 places PlainClimate covers in California, September normal highs run from 64°F in Eureka to 104°F in Brawley; Ramona's is 87°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.